题目内容
【题目】海地当地时间2010年1月12日16时53分发生里氏7.3级地震，首都太子港及全国大部分地区受灾情况严重。地震发生后，国际社会纷纷伸出援手，向海地提供人道主义援助。据此回答下列问题。
【1】地方救灾办公室能迅速、准确地掌握受灾范围、面积等情况，所利用的技术手段主要是：
A．遥感技术
B．全球定位技术
C．地理信息系统
D．卫星通信技术
【2】在营救地震被困人员的过程中，利用的现代地理信息技术主要是：
①GIS技术 ②GPS技术 ③RS技术 ④“数字地球”技术
A．①③ B．①④ C．③④ D．①②
【答案】
【1】A
【2】D
【解析】
试题分析：
【1】 遥感技术是在距离地球一定距离的飞机、飞船、卫星上，使用光学仪器和电子仪器，接收地面物体发射或反射的电磁波信号，以图象胶片或数据磁带形式记录下来，传送到地面，最后通过分析，揭示出物体的特征、性质以及变化．地震发生后，通过遥感技术可获得地面的图象，在遥感影像上，不同地物有不同的影像特征。根据图象分析出灾情，进一步采取相关措施，故A项正确。
【2】在营救地震被困人员的过程中，可利用GIS技术进行查询交通状况、救援车辆的位置、受灾地域的空间分布等，然后制定救援方案；可利用GPS技术对被困人员的精确定位，有针对性的进行救援。故D项正确。
天天向上一本好卷系列答案
小学生10分钟应用题系列答案【题目】Passage2（2017·新课标卷II，D）
体裁 | 话题 | 词数 | 难度 | 建议时间 |
说明文 | 当植物受到攻击时会保护自己并与周围植物交流 | 293 | ★★★☆☆ | 7分钟 |
When a leafy plant is under attack, it doesn’t sit quietly. Back in 1983, two scientists, Jack Schultz and Ian Baldwin, reported that young maple trees getting bitten by insects send out a particular smell that neighboring plants can get. These chemicals come from the injured parts of the plant and seem to be an alarm. What the plants pump through the air is a mixture of chemicals known as volatile organic compounds, VOCs for short.
Scientists have found that all kinds of plants give out VOCs when being attacked .It’s a plant’s way of crying out. But is anyone listening? Apparently. Because we can watch the neighbours react.
Some plants pump out smelly chemicals to keep insects away. But others do double duty. They pump out perfumes designed to attract different insects who are natural enemies to the attackers. Once they arrive, the tables are turned. The attacker who was lunching now becomes lunh.
In study after study, it appears that these chemical conversations help the neighbors .The damage is usually more serious on the first plant, but the neighbors, relatively speaking, stay safer because they heard the alarm and knew what to do.
Does this mean that plants talk to each other? Scientists don’t know. Maybe the first plant just made a cry of pain or was sending a message to its own branches, and so, in effect, was talking to itself. Perhaps the neighbors just happened to “overhear” the cry. So information was exchanged, but it wasn’t a true, intentional back and forth.
Charles Darwin, over 150 years ago, imagined a world far busier, noisier and more intimate(亲密的)
than the world we can see and hear. Our senses are weak. There’s a whole lot going on.
【1】What does a plant do when it is under attack?
A. It makes noises.
B. It gets help from other plants.
C. It stands quietly
D. It sends out certain chemicals.
【2】What does the author mean by “the tables are turned” in paragraph 3?
A. The attackers get attacked.
B. The insects gather under the table.
C. The plants get ready to fight back.
D. The perfumes attract natural enemies.
【3】Scientists find from their studies that plants can .
A. predict natural disasters
B. protect themselves against insects
C. talk to one another intentionally
D. help their neighbors when necessary
【4】what can we infer from the last paragraph?
A. The world is changing faster than ever.
B.People have stronger senses than before
C. The world is more complex than it seems
D. People in Darwin’s time were imaginative.